https://orcid.org/0000-0002-7148-9291
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Abstract
Carbonyl-containing dihydrobenzofurans/dihydrobenzopyrans were prepared from carbonyl-containing ortho-allyl/prenylphenols by activation of phenolic oxygen atom using polyphosphoric acid (PPA). Various substrates were investigated, and the corresponding dihydrobenzofurans/dihydrobenzopyrans were obtained in good to excellent yields.
Graphical Abstract
Acknowledgments
The authors are grateful for the staff at the Key Laboratory of Chemistry for Natural Products of Guizhou Province and the Chinese Academy of Sciences.
Additional information
Funding
The work here was supported by the National Natural Science Foundation of China [No. 81860609], the Guizhou Provincial Natural Science Foundation [No. QKHJC[2019]1213], the High-level Innovative Talents Training in Guizhou Province [No. 2015-4027], the Project of Guizhou Science and Technology Platform and Talent Team Under Grant [No. QKHPTRC[2017]5614], and the Plan Project of Science and Technology in Guizhou Province [No. QKHFQ[2020]4013].